// 
// IfSwitchStatement.cs
//  
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2010 Novell, Inc (http://www.novell.com)
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Xml;
using MonoDevelop.Core;
using Microsoft.CodeAnalysis;


namespace MonoDevelop.DocFood
{
	class SwitchStatement : Node
	{
		public const string XmlTag = "Switch";
		
		public List<Node> CaseSections {
			get;
			private set;
		}
		
		public SwitchStatement ()
		{
			CaseSections = new List<Node> ();
		}
		
		public override void Run (DocGenerator generator, ISymbol member)
		{
			if (!generator.EvaluateCondition (Attributes, member))
				return;
			foreach (var caseSection in CaseSections) {
				if (generator.EvaluateCondition (caseSection.Attributes, member)) {
					caseSection.Children.ForEach (child => child.Run (generator, member));
					return;
				}
			}
			Children.ForEach (child => child.Run (generator, member));
		}
		
		public override  void Write (XmlWriter writer)
		{
			writer.WriteStartElement (XmlTag);
			foreach (var pair in Attributes) {
				writer.WriteAttributeString (pair.Key, pair.Value);
			}
			WriteNodeList (writer, CaseSections);
			if (Children.Count > 0) {
				writer.WriteStartElement ("Default");
				WriteNodeList (writer, Children);
				writer.WriteEndElement ();
			}
			writer.WriteEndElement ();
		}
		
		public static SwitchStatement Read (XmlReader reader)
		{
			var result = new SwitchStatement ();
			if (reader.MoveToFirstAttribute ()) {
				do {
					result.SetAttribute (reader.LocalName, reader.Value);
				} while (reader.MoveToNextAttribute ());
			}
			XmlReadHelper.ReadList (reader, XmlTag, delegate () {
				switch (reader.LocalName) {
				case "Case":
					result.CaseSections.Add (CaseStatement.Read (reader));
					return true;
				case "Default":
					result.Children = Node.ReadNodeList (reader, "Default");
					return true;
				}
				return false;
			});
			
			return result;
		}
		
		class CaseStatement : Node
		{
			public const string XmlTag = "Case";
			
			public override void Run (DocGenerator generator, ISymbol member)
			{
				if (generator.EvaluateCondition (Attributes, member))
					Children.ForEach (child => child.Run (generator, member));
			}
			
			public override void Write (XmlWriter writer)
			{
				writer.WriteStartElement (XmlTag);
				foreach (var pair in Attributes) {
					writer.WriteAttributeString (pair.Key, pair.Value);
				}
				WriteNodeList (writer, Children);
				writer.WriteEndElement ();
			}
			
			public static CaseStatement Read (XmlReader reader)
			{
				CaseStatement result = new CaseStatement ();
				if (reader.MoveToFirstAttribute ()) {
					do {
						result.SetAttribute (reader.LocalName, reader.Value);
					} while (reader.MoveToNextAttribute ());
				}
				result.Children = Node.ReadNodeList (reader, XmlTag);
				return result;
			}
		}
	}
}

